▎ 摘　　要

NOVELTY - Preparation of graphene and thickening polymer composite film comprises taking pure graphite sheet, adding surfactant or organic solvent to form graphite suspension, placing graphite suspension in ultrasonic tank, centrifuging, removing impurities to obtain graphene dispersion liquid; dissolving thickening polymer in deionized water or organic solvent, heating to form thickening polymer solution; mixing graphene dispersion liquid and thickening polymer solution, stirring uniformly to form graphene-thickening polymer solution; and pouring solution into glass metal culture dish, and drying. USE - Method for preparing graphene and thickening polymer composite film (claimed). ADVANTAGE - The film has 10-1000 mu m thickness. The method is simple. DETAILED DESCRIPTION - Preparation of graphene and thickening polymer composite film comprises taking pure graphite sheet, adding 0.01-0.2 mg/ml surfactant or organic solvent to form graphite suspension with 1-10 mg/ml concentration, placing graphite suspension in ultrasonic tank for more than 10 hours, centrifuging, removing impurities in mixed solution of micro-graphite sheet to obtain 0.2-2 mg/ml graphene dispersion liquid; dissolving thickening polymer in deionized water or organic solvent, heating to form 1-5 g/ml thickening polymer solution; mixing graphene dispersion liquid and thickening polymer solution at 200-5000 mass ratio, stirring uniformly to form graphene-thickening polymer solution; and pouring solution into glass metal culture dish, and drying at 40-70 degrees C for 120-140 hours.